Statistics for Managers Using Microsoft Excel, 7e (Levine) Chapter Organizing and Visualizing Data 1) A summary measure that is computed to describe a characteristic from only a sample of the population is called A) an ordered array B) a summary table C) a statistic D) a parameter Answer: C Difficulty: Easy Keywords: statistic 2) A summary measure that is computed to describe a characteristic of an entire population is called A) a parameter B) an ordered array C) a statistic D) a summary table Answer: A Difficulty: Easy Keywords: parameter 3) Which of the following is most likely a parameter as opposed to a statistic? A) the average score of the first five students completing an assignment B) the proportion of females registered to vote in a county C) the average height of people randomly selected from a database D) the proportion of trucks stopped yesterday that were cited for bad brakes Answer: B Difficulty: Moderate Keywords: parameter, statistic 4) The chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited campus bars on the weekend before the final exam week Her assistant took a random sample of 250 students and computed the portion of students in the sample who visited campus bars on the weekend before the final exam The portion of all students at her university who visited campus bars on the weekend before the final exam week is an example of A) a summary table B) an ogive C) a parameter D) a statistic Answer: C Difficulty: Moderate Keywords: parameter 2-1 Copyright © 2014 Pearson Education, Inc 5) The chancellor of a major university was concerned about alcohol abuse on her campus and wanted to find out the proportion of students at her university who visited campus bars on the weekend before the final exam week Her assistant took a random sample of 250 students The portion of students in the sample who visited campus bars on the weekend before the final exam week is an example of A) a summary table B) an ogive C) a parameter D) a statistic Answer: D Difficulty: Moderate Keywords: statistic 6) True or False: A statistic is usually used to provide an estimate for a usually unobserved parameter Answer: TRUE Difficulty: Moderate Keywords: statistic, parameter, inferential statistic 7) True or False: A statistic is usually unobservable while a parameter is usually observable Answer: FALSE Difficulty: Moderate Keywords: statistic, parameter, inferential statistic 8) The Human Resources Director of a large corporation wishes to develop an employee benefits package and decides to select 500 employees from a list of all (N = 40,000) workers in order to study their preferences for the various components of a potential package The Director will use the data from the sample to compute Answer: statistics Difficulty: Easy Keywords: statistic 9) The Human Resources Director of a large corporation wishes to develop an employee benefits package and decides to select 500 employees from a list of all (N = 40,000) workers in order to study their preferences for the various components of a potential package Information obtained from the sample will be used to draw conclusions about the true population Answer: parameters Difficulty: Easy Keywords: parameter 10) The oranges grown in corporate farms in an agricultural state were damaged by some unknown fungi a few years ago Suppose the manager of a large farm wanted to study the impact of the fungi on the orange crops on a daily basis over a 6-week period On each day a random sample of orange trees was selected from within a random sample of acres The daily average number of damaged oranges per tree and the proportion of trees having damaged oranges were calculated The two main measures calculated each day (i.e., average number of damaged oranges per tree and proportion of trees having damaged oranges) are called Answer: statistics Difficulty: Moderate Keywords: statistic 2-2 Copyright © 2014 Pearson Education, Inc 11) The oranges grown in corporate farms in an agricultural state were damaged by some unknown fungi a few years ago Suppose the manager of a large farm wanted to study the impact of the fungi on the orange crops on a daily basis over a 6-week period On each day a random sample of orange trees was selected from within a random sample of acres The daily average number of damaged oranges per tree and the proportion of trees having damaged oranges were calculated The two main measures calculated each day (i.e., average number of damaged oranges per tree and proportion of trees having damaged oranges) may be used on a daily basis to estimate the respective true population Answer: parameters Difficulty: Easy Keywords: parameters 12) The Quality Assurance Department of a large urban hospital is attempting to monitor and evaluate patient satisfaction with hospital services Prior to discharge, a random sample of patients is asked to fill out a questionnaire to rate such services as medical care, nursing, therapy, laboratory, food, and cleaning The Quality Assurance Department prepares weekly reports that are presented at the Board of Directors meetings and extraordinary/atypical ratings are easy to flag Values computed from the sample results each week are called Answer: statistics Difficulty: Easy Keywords: statistic 13) The Quality Assurance Department of a large urban hospital is attempting to monitor and evaluate patient satisfaction with hospital services Prior to discharge, a random sample of patients is asked to fill out a questionnaire to rate such services as medical care, nursing, therapy, laboratory, food, and cleaning The Quality Assurance Department prepares weekly reports that are presented at the Board of Directors meetings and extraordinary/atypical ratings are easy to flag True population characteristics estimated from the sample results each week are called Answer: parameters Difficulty: Easy Keywords: parameter 14) The Commissioner of Health in New York State wanted to study malpractice litigation in New York A sample of 31 thousand medical records was drawn from a population of 2.7 million patients who were discharged during 2010 The proportion of malpractice claims filed from the sample of 31 thousand patients is a Answer: statistic Difficulty: Moderate Keywords: statistic 15) The Commissioner of Health in New York State wanted to study malpractice litigation in New York A sample of 31 thousand medical records was drawn from a population of 2.7 million patients who were discharged during 2010 The true proportion of malpractice claims filed from the population of 2.7 million patients is a Answer: parameter Difficulty: Easy Keywords: parameter 2-3 Copyright © 2014 Pearson Education, Inc TABLE 2-1 An insurance company evaluates many numerical variables about a person before deciding on an appropriate rate for automobile insurance A representative from a local insurance agency selected a random sample of insured drivers and recorded, X, the number of claims each made in the last years, with the following results X f 14 18 12 16) Referring to Table 2-1, how many drivers are represented in the sample? A) B) 15 C) 18 D) 50 Answer: D Difficulty: Easy Keywords: frequency distribution 17) Referring to Table 2-1, how many total claims are represented in the sample? A) 15 B) 50 C) 111 D) 250 Answer: C Difficulty: Moderate Keywords: interpretation, frequency distribution 18) A type of vertical bar chart in which the categories are plotted in the descending rank order of the magnitude of their frequencies is called a A) contingency table B) Pareto chart C) stem-and-leaf display D) pie chart Answer: B Difficulty: Easy Keywords: Pareto chart 2-4 Copyright © 2014 Pearson Education, Inc TABLE 2-2 At a meeting of information systems officers for regional offices of a national company, a survey was taken to determine the number of employees the officers supervise in the operation of their departments, where X is the number of employees overseen by each information systems officer X f 11 19) Referring to Table 2-2, how many regional offices are represented in the survey results? A) B) 11 C) 15 D) 40 Answer: D Difficulty: Easy Keywords: interpretation, frequency distribution 20) Referring to Table 2-2, across all of the regional offices, how many total employees were supervised by those surveyed? A) 15 B) 40 C) 127 D) 200 Answer: C Difficulty: Moderate Keywords: interpretation, frequency distribution 21) The width of each bar in a histogram corresponds to the A) differences between the boundaries of the class B) number of observations in each class C) midpoint of each class D) percentage of observations in each class Answer: A Difficulty: Easy Keywords: frequency distribution 2-5 Copyright © 2014 Pearson Education, Inc TABLE 2-3 Every spring semester, the School of Business coordinates a luncheon with local business leaders for graduating seniors, their families, and friends Corporate sponsorship pays for the lunches of each of the seniors, but students have to purchase tickets to cover the cost of lunches served to guests they bring with them The following histogram represents the attendance at the senior luncheon, where X is the number of guests each graduating senior invited to the luncheon and f is the number of graduating seniors in each category 22) Referring to the histogram from Table 2-3, how many graduating seniors attended the luncheon? A) B) 152 C) 275 D) 388 Answer: C Explanation: C) The number of graduating seniors is the sum of all the frequencies, f Difficulty: Difficult Keywords: interpretation, histogram 23) Referring to the histogram from Table 2-3, if all the tickets purchased were used, how many guests attended the luncheon? A) B) 152 C) 275 D) 388 Answer: D Explanation: D) The total number of guests is Difficulty: Difficult Keywords: interpretation, histogram 2-6 Copyright © 2014 Pearson Education, Inc 24) A professor of economics at a small Texas university wanted to determine what year in school students were taking his tough economics course Shown below is a pie chart of the results What percentage of the class took the course prior to reaching their senior year? A) 14% B) 44% C) 54% D) 86% Answer: D Difficulty: Easy Keywords: interpretation, pie chart 25) When polygons or histograms are constructed, which axis must show the true zero or "origin"? A) The horizontal axis B) The vertical axis C) Both the horizontal and vertical axes D) Neither the horizontal nor the vertical axis Answer: B Difficulty: Easy Keywords: polygon, histogram 26) When constructing charts, the following is plotted at the class midpoints: A) frequency histograms B) percentage polygons C) cumulative percentage polygon (ogives) D) All of the above Answer: B Difficulty: Easy Keywords: percentage polygon 2-7 Copyright © 2014 Pearson Education, Inc TABLE 2-4 A survey was conducted to determine how people rated the quality of programming available on television Respondents were asked to rate the overall quality from (no quality at all) to 100 (extremely good quality) The stem-and-leaf display of the data is shown below Stem Leaves 24 03478999 0112345 12566 01 27) Referring to Table 2-4, what percentage of the respondents rated overall television quality with a rating of 80 or above? A) B) C) 96 D) 100 Answer: B Difficulty: Easy Keywords: stem-and-leaf display, interpretation 28) Referring to Table 2-4, what percentage of the respondents rated overall television quality with a rating of 50 or below? A) 11 B) 40 C) 44 D) 56 Answer: C Difficulty: Moderate Keywords: stem-and-leaf display, interpretation 29) Referring to Table 2-4, what percentage of the respondents rated overall television quality with a rating from 50 through 75? A) 11 B) 40 C) 44 D) 56 Answer: D Difficulty: Moderate Keywords: stem-and-leaf display, interpretation 2-8 Copyright © 2014 Pearson Education, Inc TABLE 2-5 The following are the duration in minutes of a sample of long-distance phone calls made within the continental United States reported by one long-distance carrier Time (in Minutes) but less than 5 but less than 10 10 but less than 15 15 but less than 20 20 but less than 25 25 but less than 30 30 or more Relative Frequency 0.37 0.22 0.15 0.10 0.07 0.07 0.02 30) Referring to Table 2-5, what is the width of each class? A) minute B) minutes C) 2% D) 100% Answer: B Difficulty: Easy Keywords: class interval, relative frequency distribution 31) Referring to Table 2-5, if 1,000 calls were randomly sampled, how many calls lasted under 10 minutes? A) 220 B) 370 C) 410 D) 590 Answer: D Difficulty: Moderate Keywords: relative frequency distribution, interpretation 32) Referring to Table 2-5, if 100 calls were randomly sampled, how many calls lasted 15 minutes or longer? A) 10 B) 14 C) 26 D) 74 Answer: C Difficulty: Moderate Keywords: relative frequency distribution, interpretation 2-9 Copyright © 2014 Pearson Education, Inc 33) Referring to Table 2-5, if 10 calls lasted 30 minutes or more, how many calls lasted less than minutes? A) 10 B) 185 C) 295 D) 500 Answer: B Difficulty: Moderate Keywords: relative frequency distribution, interpretation 34) Referring to Table 2-5, what is the cumulative relative frequency for the percentage of calls that lasted under 20 minutes? A) 0.10 B) 0.59 C) 0.76 D) 0.84 Answer: D Difficulty: Easy Keywords: cumulative relative frequency 35) Referring to Table 2-5, what is the cumulative relative frequency for the percentage of calls that lasted 10 minutes or more? A) 0.16 B) 0.24 C) 0.41 D) 0.90 Answer: C Difficulty: Moderate Keywords: cumulative relative frequency 36) Referring to Table 2-5, if 100 calls were randomly sampled, of them would have lasted at least 15 minutes but less than 20 minutes A) B) C) 10 D) 16 Answer: C Difficulty: Easy Keywords: relative frequency distribution, interpretation 2-10 Copyright © 2014 Pearson Education, Inc 172) Referring to Table 2-13, construct a cumulative percentage polygon for the detergent data if the corresponding frequency distribution uses "9.0 but less than 10.0" as the first class Answer: Difficulty: Moderate Keywords: cumulative percentage polygon 173) Referring to Table 2-13, construct a percentage polygon for the detergent data if the corresponding frequency distribution uses "9.0 but less than 10.0" as the first class Answer: Difficulty: Moderate Keywords: percentage distribution, percentage polygon 2-37 Copyright © 2014 Pearson Education, Inc TABLE 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender Own a Portable Blu-ray player Yes No Male Female 96 224 40 240 174) Referring to Table 2-14, construct a table of row percentages Answer: Own Male Female Total Yes 70.59% 29.41% 100.00% No 48.28% 51.72% 100.00% Total 53.33% 46.67% 100.00% Difficulty: Easy Keywords: row percentages 175) Referring to Table 2-14, construct a table of column percentages Answer: Own Male Female Total Yes 30.00% 14.29% 22.67% No 70.00% 85.71% 77.33% Total 100.00% 100.00% 100.00% Difficulty: Easy Keywords: column percentages 176) Referring to Table 2-14, construct a table of total percentages Answer: Own Male Female Total Yes 16.00% 6.67% 22.67% No 37.33% 40.00% 77.33% Total 53.33% 46.67% 100.00% Difficulty: Easy Keywords: total percentages 177) Referring to Table 2-14, of those who owned a portable Blu-ray player in the sample, percent were females Answer: 29.41 Difficulty: Moderate Keywords: contingency table, row percentages 2-38 Copyright © 2014 Pearson Education, Inc 178) Referring to Table 2-14, of those who did not own a portable Blu-ray player in the sample, percent were males Answer: 48.28 Difficulty: Moderate Keywords: contingency table, row percentages 179) Referring to Table 2-14, of the males in the sample, percent owned a portable Blu-ray player Answer: 30 Difficulty: Moderate Keywords: contingency table, column percentages 180) Referring to Table 2-14, of the females in the sample, percent did not own a portable Bluray player Answer: 85.71 Difficulty: Moderate Keywords: contingency table, column percentages 181) Referring to Table 2-14, of the females in the sample, percent owned a portable Blu-ray player Answer: 14.29 Difficulty: Moderate Keywords: contingency table, column percentages 182) Referring to Table 2-14, percent of the 600 were females who owned a portable Blu-ray player Answer: 6.67 Difficulty: Moderate Keywords: contingency table, total percentage 183) Referring to Table 2-14, percent of the 600 were males who owned a portable Blu-ray player Answer: 16 Difficulty: Moderate Keywords: contingency table, total percentage 184) Referring to Table 2-14, percent of the 600 were females who either owned or did not own a portable Blu-ray player Answer: 46.67 Difficulty: Moderate Keywords: contingency table, total percentage 185) Referring to Table 2-14, percent of the 600 were males who did not own a portable Blu-ray player Answer: 37.33 Difficulty: Moderate Keywords: contingency table, total percentage 2-39 Copyright © 2014 Pearson Education, Inc 186) Referring to Table 2-14, percent of the 600 owned a portable Blu-ray player Answer: 22.67 Difficulty: Moderate Keywords: contingency table, column percentages 187) Referring to Table 2-14, percent of the 600 did not own a portable Blu-ray player Answer: 77.33 Difficulty: Moderate Keywords: contingency table, column percentages 188) Referring to Table 2-14, percent of the 600 were females Answer: 46.67 Difficulty: Easy Keywords: contingency table, row percentages 189) Referring to Table 2-14, if the sample is a good representation of the population, we can expect percent of the population will own a portable Blu-ray player Answer: 22.67 Difficulty: Moderate Keywords: contingency table, column percentages 190) Referring to Table 2-14, if the sample is a good representation of the population, we can expect percent of the population will be males Answer: 53.33 Difficulty: Moderate Keywords: contingency table, column percentages 191) Referring to Table 2-14, if the sample is a good representation of the population, we can expect percent of those who own a portable Blu-ray player in the population will be males Answer: 70.59 Difficulty: Moderate Keywords: contingency table, row percentages 192) Referring to Table 2-14, if the sample is a good representation of the population, we can expect percent of the males in the population will own a portable Blu-ray player Answer: 30 Difficulty: Moderate Keywords: contingency table, column percentages 193) Referring to Table 2-14, if the sample is a good representation of the population, we can expect percent of the females in the population will not own a portable Blu-ray player Answer: 85.71 Difficulty: Moderate Keywords: contingency table, column percentages 2-40 Copyright © 2014 Pearson Education, Inc TABLE 2-15 The figure below is the ogive for the amount of fat (in grams) for a sample of 36 pizza products where the upper boundaries of the intervals are: 5, 10, 15, 20, 25, and 30 194) Referring to Table 2-15, roughly what percentage of pizza products contains less than 10 grams of fat? A) 3% B) 14% C) 50% D) 75% Answer: B Difficulty: Easy Keywords: cumulative percentage polygon, ogive, interpretation 195) Referring to Table 2-15, what percentage of pizza products contains at least 20 grams of fat? A) 5% B) 25% C) 75% D) 96% Answer: B Difficulty: Easy Keywords: cumulative percentage polygon, ogive, interpretation 196) Referring to Table 2-15, what percentage of pizza products contains between 10 and 25 grams of fat? A) 14% B) 44% C) 62% D) 81% Answer: D Difficulty: Easy Keywords: cumulative percentage polygon, ogive, interpretation 2-41 Copyright © 2014 Pearson Education, Inc TABLE 2-16 The figure below is the percentage polygon for the amount of calories for a sample of 36 pizza products where the upper limits of the intervals are: 310, 340, 370, 400 and 430 197) Referring to Table 2-16, roughly what percentage of pizza products contains between 400 and 430 calories? A) 0% B) 11% C) 89% D) 100% Answer: B Difficulty: Easy Keywords: percentage polygon, interpretation 198) Referring to Table 2-16, roughly what percentage of pizza products contains between 340 and 400 calories? A) 22% B) 25% C) 28% D) 50% Answer: D Difficulty: Moderate Keywords: percentage polygon, interpretation 199) Referring to Table 2-16, roughly what percentage of pizza products contains at least 340 calories? A) 25% B) 28% C) 39% D) 61% Answer: D Difficulty: Moderate Keywords: percentage polygon, interpretation 2-42 Copyright © 2014 Pearson Education, Inc TABLE 2-17 The following table presents total retail sales in millions of dollars for the leading apparel companies over a two-year period APPAREL COMPANY Gap TJX Limited Kohl's Nordstrom Talbots AnnTaylor Year 1,159.00 781.7 596.5 544.9 402.6 139.9 114.2 Year 962 899 620.4 678.9 418.3 130.1 124.8 200) Referring to Table 2-17, construct a table of column percentages Answer: Apparel Company Year Year Gap 31.00% 25.09% TJX 20.91% 23.45% Limited 15.95% 16.18% Kohl's 14.57% 17.71% Nordstrom 10.77% 10.91% Talbots 3.74% 3.39% AnnTaylor 3.05% 3.26% Total 100.00% 100.00% Difficulty: Moderate Keywords: column percentages 2-43 Copyright © 2014 Pearson Education, Inc 201) Referring to Table 2-17, construct a side-by-side bar chart Answer: Difficulty: Moderate Keywords: column percentages, side-by-side bar chart 202) True or False: Referring to Table 2-17, in general, retail sales for the apparel industry have seen a modest growth between Year and Year Answer: TRUE Difficulty: Easy Keywords: column percentages, side-by-side bar chart, interpretation 203) Referring to Table 2-17, among the stores, saw a sales decline Answer: Gap and Talbots Difficulty: Easy Keywords: column percentages, side-by-side bar chart, interpretation 2-44 Copyright © 2014 Pearson Education, Inc TABLE 2-18 The stem-and-leaf display below shows the result of a survey of 50 students on their satisfaction with their school, with the higher scores representing a higher level of satisfaction 204) Referring to Table 2-18, what was the highest level of satisfaction? Answer: 97 Difficulty: Easy Keywords: stem-and-leaf display 205) Referring to Table 2-18, what was the lowest level of satisfaction? Answer: 41 Difficulty: Easy Keywords: stem-and-leaf display 206) Referring to Table 2-18, how many students have a satisfaction level in the 50s? Answer: Difficulty: Easy Keywords: stem-and-leaf display 207) Referring to Table 2-18, how many students have a satisfaction level below 60? Answer: 10 Difficulty: Easy Keywords: stem-and-leaf display 208) Referring to Table 2-18, how many students have a satisfaction level of at least 80? Answer: 15 Difficulty: Easy Keywords: stem-and-leaf display 209) True or False: Referring to Table 2-18, the level of satisfaction is concentrated around 75 Answer: TRUE Difficulty: Easy Keywords: stem-and-leaf display 2-45 Copyright © 2014 Pearson Education, Inc 210) True or False: Referring to Table 2-18, if a student is randomly selected, his/her most likely level of satisfaction will be in the 70s among the 40s, 50s, 60s, 70s, 80s and 90s Answer: TRUE Difficulty: Easy Keywords: stem-and-leaf display 211) True or False: Referring to Table 2-18, if a student is randomly selected, his/her most likely level of satisfaction will be in the 60s among the 40s, 50s, 60s, 70s, 80s and 90s Answer: FALSE Difficulty: Easy Keywords: stem-and-leaf display 212) True or False: Given below is the scatter plot of the price/earnings ratio versus earnings per share of 20 U.S companies There appears to be a negative relationship between price/earnings ratio and earnings per share Answer: TRUE Difficulty: Easy Keywords: scatter plot 2-46 Copyright © 2014 Pearson Education, Inc 213) True or False: Given below is the scatter plot of the price/earnings ratio versus earnings per share of 20 U.S companies There appears to be a positive relationship between price/earnings ratio and earnings per share Answer: FALSE Difficulty: Moderate Keywords: scatter plot 214) True or False: Given below is the scatter plot of the market value (thousands$) and profit (thousands$) of 50 U.S companies Higher market values appear to be associated with higher profits Answer: TRUE Difficulty: Easy Keywords: scatter plot 2-47 Copyright © 2014 Pearson Education, Inc 215) True or False: Given below is the scatter plot of the market value (thousands$) and profit (thousands$) of 50 U.S companies There appears to be a negative relationship between market value and profit Answer: FALSE Difficulty: Easy Keywords: scatter plot 216) True or False: Given below is the scatter plot of the number of employees and the total revenue (millions$) of 20 U.S companies There appears to be a positive relationship between total revenue and the number of employees Answer: TRUE Difficulty: Moderate Keywords: scatter plot 2-48 Copyright © 2014 Pearson Education, Inc 217) True or False: Given below is the scatter plot of the number of employees and the total revenue (millions$) of 20 U.S companies Companies that have higher numbers of employees appear to also have higher total revenue Answer: TRUE Difficulty: Moderate Keywords: scatter plot 218) The addition of visual elements that either fail to convey any useful information or that obscure important points about the data in an attempt to enhance the visualization of data is called Answer: chart junk Difficulty: Easy Keywords: challenges in visualizing data 219) True or False: The Guidelines for Developing Visualizations recommend avoiding uncommon chart types such as doughnut, radar, cone and pyramid charts Answer: TRUE Difficulty: Easy Keywords: challenges in visualizing data 220) True or False: The Guidelines for Developing Visualizations recommend using the simplest possible visualization Answer: TRUE Difficulty: Easy Keywords: challenges in visualizing data 221) True or False: The Guidelines for Developing Visualizations recommend labeling all axes only when it is possible Answer: FALSE Difficulty: Easy Keywords: challenges in visualizing data 2-49 Copyright © 2014 Pearson Education, Inc 222) True or False: The Guidelines for Developing Visualizations recommend using varying scale to conserve precious space whenever possible Answer: FALSE Difficulty: Easy Keywords: challenges in visualizing data 223) True or False: The Guidelines for Developing Visualizations recommend always starting the scale for a vertical axis at zero Answer: TRUE Difficulty: Easy Keywords: challenges in visualizing data 224) True or False: The Guidelines for Developing Visualizations recommend always including a scale for each axis if the chart contains axes Answer: TRUE Difficulty: Easy Keywords: challenges in visualizing data 225) True or False: When you work with many variables, you must be mindful of the limits of the information technology as well as the limits of the ability of your readers to perceive and comprehend your results Answer: TRUE Difficulty: Easy Keywords: organizing and visualizing many variables 226) True or False: A multidimensional contingency table allows you to tally the responses of more than two continuous variables Answer: FALSE Difficulty: Moderate Keywords: multidimensional contingency table, organizing and visualizing many variables 227) True or False: A multidimensional contingency table allows you to tally the responses of more than two categorical variables Answer: TRUE Difficulty: Moderate Keywords: multidimensional contingency table, organizing and visualizing many variables 228) True or False: Double-clicking a cell in a PivotTable causes Excel to drill down and display the underlying data in a new worksheet Answer: TRUE Difficulty: Moderate Keywords: drill down, PivotTable, multidimensional contingency table, organizing and visualizing many variables 2-50 Copyright © 2014 Pearson Education, Inc 229) True or False: You can compute any of the numerical descriptive statistics for the variables of the new worksheet that a drill-down in a PivotTable creates Answer: TRUE Difficulty: Moderate Keywords: drill down, PivotTable, multidimensional contingency table, organizing and visualizing many variables 230) True or False: Some business analytics are performed by adding variables to see if unforeseen relationships are uncovered Answer: TRUE Difficulty: Easy Keywords: business analytics 231) True or False: Some business analytics involve starting with many variables and are then followed by filtering the data by exploring specific combinations of categorical values or numerical range Answer: TRUE Difficulty: Easy Keywords: business analytics, filter 232) True or False: Some business analytics involve starting with many variables and are then followed by filtering the data by exploring specific combinations of categorical values or numerical range In Excel, this approach is mimicked by using a drill-down Answer: FALSE Difficulty: Easy Keywords: business analytics, filter, PivotTable, drill-down 233) True or False: Some business analytics involve starting with many variables and are then followed by filtering the data by exploring specific combinations of categorical values or numerical range In Excel, this approach is mimicked by using a slicer Answer: TRUE Difficulty: Easy Keywords: business analytics, filter, PivotTable, slicer 234) True or False: In real-world business analytics, filtering are typically performed on large data based on complex conditional relationship Answer: TRUE Difficulty: Easy Keywords: business analytics, filter, PivotTable 235) True or False: There is no significant difference between filtering performed in a complex real-world business analytic and filtering performed using the slicers in a PivotTable in Excel Answer: FALSE Difficulty: Moderate Keywords: business analytics, filter, PivotTable, slicer 2-51 Copyright © 2014 Pearson Education, Inc ... have collected information on the market share of different search engines used by U.S Internet users in a particular quarter Which of the following is the best for presenting the information? A)... data on the number of U.S households actively using online banking and/or online bill payment over a 10-year period Which of the following is the best for presenting the data? A) a pie chart B)... 200 people broken down by gender about the latest congressional plan to eliminate anti-trust exemptions for professional baseball Female Male Totals For 38 12 50 Neutral 54 36 90 Against 12 48